• Editor Rating
  • Rated 2.5 stars
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  • TST Fuel
  • Reviewed by:
  • Published on:
  • Last modified: September 14, 2016
  • Overall
    Editor: 51%
  • Effectiveness
    Editor: 49%
  • Speed of Results
    Editor: 51%
  • Sustaining Results
    Editor: 49%
  • Safety
    Editor: 52%
  • Value
    Editor: 49%

What Is TST Fuel?

TST Fuel is a supplement in the category of testosterone boosters. Its claims are that it increases muscle mass, reduces recovery time, increases metabolism, increases mental focus, and increases testosterone. The manufacturer says that for best results, you should use the supplement for at least 90 consecutive days. This product is made in the USA.

The ingredients of this supplement include an amino acid plus four herbal ingredients. These ingredients each have at least some scientific evidence for the claims that TST Fuel makes. The ingredients can have a lot of side effects, as well as interactions with medications and medical conditions. This is especially true of Yohimbe, which is a powerful stimulant that is potentially dangerous. Therefore, you should use caution when using this product.



It’s important to choose a testosterone booster that’s effective, safe, and reliable. A supplement with these qualities will give you the results you’re looking for. For this reason, it’s a good idea to choose a trustworthy company that makes this type of supplement. Untrustworthy companies could have misleading business practices or unreliable products. If a trustworthy, transparent, and well-known company is a priority to you, this particular supplement may not be your first choice.

Very little information is available about the company that makes this product. The company also goes by the name TST Fuel, and is based in Phoenix, Arizona. Information such as the history, leadership, and manufacturing qualifications of this company is not made available. Also take note that the terms and conditions of the manufacturer’s website stipulates that by purchasing the product, you relinquish your right to form a class action lawsuit against the company.


How TST Fuel Works?

It’s good to understand how supplements that you’re taking work. TST Fuel purports to increase lean muscle mass, cut recovery time, increase metabolism, increase mental focus, and increase testosterone. Each of the ingredients has slightly different functions, and they work in different ways. Each ingredient’s effects come together to give you the broader results that this supplement promises.

L-Arginine adds to the results of the supplement by increasing blood flow and nitric oxide levels. Maca contributes by increasing subjective well-being and by theoretically enhancing the body’s response to exercise-induced muscle stress. Horny Goat Weed helps because it contains chemicals that may increase blood flow. Tribulus Terrestris supposedly can help increase testosterone, though research is conflicting. Finally, the addition of Yohimbe to the TST Fuel formula increases blood flow, energy, and mental performance.


Ingredients of TST Fuel

The active ingredients of this supplement are L-Arginine HCL, Maca Root, Horny Goat Weed, Tribulus Terrestris, and Yohimbe. The inactive ingredients or filler ingredients of the pills are not stated by the manufacturer. It could potentially contain allergens like wheat or soy. If you’re sensitive to any foods, dyes, or preservatives, you should check the bottle before taking the supplement.


L-Arginine is an amino acid, or a building block for proteins. You can get it from animal and dairy food products, but it’s also popular to take as a dietary supplement. The manufacturers refer to their formula as “Nobel Prize-winning technology”, but this seems to be an intentionally misleading statement. TST Fuel is not associated with the Nobel Prize. Rather, a pharmacologist named Louis J. Ignarro received the 1998 Nobel Prize in Medicine for his research on L-Arginine and nitric oxide.

L-Arginine is converted by the body into nitric oxide, which in turn causes blood vessels to dilate, letting blood flow more easily. This increases oxygen access for muscles, which theoretically should improve exercise performance. There is conflicting evidence about whether L-Arginine actually helps exercise performance, but it could possibly work for you. One study, involving 24 pigs, found that L-Arginine supplementation increased muscle mass while decreasing body fat. This fat-reducing benefit could possibly extend to humans as well.

L-Arginine can cause side effects including abdominal pain, bloating, gout, diarrhea, allergies, and low blood pressure. Don’t use it if you have allergies or asthma, cirrhosis, guanidinoacetate methyltransferase deficiency, low blood pressure, or kidney disease. It interacts with medications for high blood pressure, medications for diabetes, nitrates, and potassium-sparing diuretics.

Maca Root

Maca Root, sometimes called Peruvian Ginseng, is a vegetable related to radishes and turnips that grows in the Andes highlands. It has been used historically for hundreds, if not thousands, of years as both food and medicine. Maca Root supplementation has a range of benefits. Studies have shown that it can boost your mood, improve cognitive ability, reduce the negative effects of stress, and increase subjective well-being. Maca Root even has antioxidant properties, protecting your cells from oxidative stress and scavenging free radicals.

Some studies have also suggested that the antioxidants in Maca Root enhance the body’s response to muscle damage caused by exercise. It does so by increasing the number of immune cells responsible for muscle repair. Taking a Maca Root supplement could theoretically improve your muscle recovery time.

Horny Goat Weed

Horny Goat Weed can refer to up to 15 different species of flowering plant from the Epimedium genus. These plants have been used in Traditional Chinese Medicine for at least 1,000 years. Horny Goat Weed contains chemicals that might be able to increase blood flow, which can be beneficial. However, multiple studies done on animals have shown that Horny Goat Weed does not have the ability to increase testosterone, and no studies about this have been conducted on humans.

Long-term use of Horny Goat Weed can cause side effects like dizziness, dry mouth, thirst, nosebleed, or vomiting. Because Horny Goat Weed slows blood clotting, you shouldn’t take it if you have a bleeding disorder. Horny Goat Weed also has the potential to lower blood pressure, so you shouldn’t take it if your blood pressure is already low. Furthermore, don’t take Horny Goat Weed within two weeks of any surgery.

Tribulus Terrestris

Tribulus Terrestris is native to many regions of the world, but now grows as an invasive species in North America. Another common name for this plant is puncturevine, as it produces fruit covered with dangerous spines. Tribulus Terrestris is a component of Traditional Chinese Medicine as well as Ayurvedic medicine. It contains a wide variety of chemicals that could produce an effect in humans, including saponins, glycosides, flavonoids, alkaloids, resins, tannins, sterols and sugars. It is believed that the steroidal saponins found in the plant are the most biologically active components.

The chemicals in Tribulus Terrestris have the potential to increase hormones in animals, but it’s unclear whether this effect extends to humans. Some studies have found that it doesn’t increase testosterone in humans; however, there has been at least one study that found that Tribulus Terrestris supplementation produced a significant increase in testosterone.

A study published in the year 2000, in the International Journal of Sport Nutrition and Exercise Metabolism, found that Tribulus Terrestris supplements produced no change in body weight or body fat after an eight-week period. Additionally, Tribulus Terrestris doesn’t seem to enhance exercise performance. A study done with 22 athletes found that using this plant as a supplement did not increase muscle mass or muscle strength. Overall, Tribulus Terrestris is not that well-proven of an ingredient. It’s only possible benefit is an increase in testosterone, which may or may not happen for you.


Yohimbe is an evergreen tree that is found in parts of central and western Africa, scientifically known as Pausinystalia johimbe. The bark of this tree contains a chemical known as yohimbine, which has been used as medicine in local regions and has now spread to the Western world. Yohimbe’s active chemical components increase blood flow. It also acts as a stimulant.

Yohimbe works by increasing the body’s levels of adrenaline, producing a stimulant and vasodilating effect. It also inhibits a regulatory process in fat cells that normally suppresses fat burning, thereby making it easier to burn fat. Yohimbe is much more effective when taken on an empty stomach or during fasting.

One study involving 20 soccer players demonstrated that taking Yohimbe significantly decreased body fat levels. However, it had no effect on athletic performance. A different study found that people who took Yohimbe were better at performing arithmetic tasks, suggesting an increase in energy and cognitive abilities. Yohimbe probably doesn’t increase testosterone.

Yohimbe can cause severe side effects like hypotension, hypertension, stomachache, and weakness. It can cause extreme anxiety in people who are predisposed to it. You shouldn’t use Yohimbe if you have kidney or liver disease. Because Yohimbe is potentially dangerous and stressful on the body, you should talk to your doctor before taking it.



The advantage of this supplement is that it contains a pretty good blend of synergistic ingredients that have decent scientific evidence for their use. The ingredient L-Arginine, in particular, is one of the best aspects of this supplement. L-Arginine improves blood flow and can have a lot of health benefits beyond sports or bodybuilding-related benefits. The supplement also contains Yohimbe, which acts as a natural herbal stimulant and therefore can help you have more energy.

Aside from the advantages of the supplement itself, there is also the manufacturer’s practices and policies. For some people, the auto-refill subscription program of the TST Fuel manufacturer can be an advantage. You can conveniently receive a new bottle every 30 days. Because it’s automatic, you won’t forget to get a new bottle. That way, you won’t accidentally run out.



Occasionally, testosterone boosters can have certificates. Supplement certificates can be from medical or scientific institutions, sports organizations, or good manufacturing practices agencies. When a supplement features certificates like these, it can be an indicator of high quality or effectiveness. This supplement doesn’t have any such certificates associated with it.

Aside from certificates for products themselves, websites associated with products can also have certificates. McAfee Secure is a well-known safety certificate issued to websites by the anti-malware company McAfee. A McAfee Secure certificate indicates that a site is free of malware. Websites featuring this certificate tend to be more safe and reliable.

The manufacturer’s website contains a non-clickable image purporting to be a McAfee Secure certificate. However, it appears to be fake, as real McAfee Secure certificates are clickable. This website is not really certified to be free of malware. Although this does not necessarily mean that it contains malware, you should know that this is a possibility. The fraudulence of the safety certificate further degrades the trustworthiness of this website.



Testimonials and product reviews are a good way to get a better understanding of a product, including the quality of the product and whether it will work for you personally. It seems that the only customer testimonials or reviews published online are those posted by the manufacturer. Here are some testimonials:

Most of the stuff out there is actually junk. But TST Fuel seems to be the real exception. The lean muscle growth is there.

– Richard P., New York, NY, US

I’ve been taking TST Fuel for 2 months and have definitely noticed the change in my life. I love the muscle gains […] and stamina.

– Ryan D., Atlanta, GA, US

I’ve taken TST Fuel for three months and added about an inch and a half of muscle mass on my arms and an inch on the chest. This stuff is the bomb.

– Derek Z., Phoenix, AZ, US

With TST Fuel, I’ve been able to achieve the growth in muscle mass I’ve always dreamed of. Its the only supplement out there that actually works plus the added advantage of amazing stamina.

– Alex R., Philadelphia, PA, US

However, these testimonials are posted by the manufacturer itself, so they could be biased. They may even be falsified, considering the unreliability of the manufacturer’s website. Use your own judgment in regards to these testimonials’ trustworthiness.


Awards & Media Coverage

Media coverage can be a good indicator of the quality of a testosterone booster. After all, a low-quality testosterone booster wouldn’t receive positive media attention. If you’re going for a well-known, quality supplement, you should look for supplements with positive media attention.

Like media coverage, awards can give you an idea of how good a supplement is. A supplement could have an award from a medical institution, scientific institution, or sports or bodybuilding institution. If a supplement has any of these types of awards, it is probably more likely to be high-quality and effective.

This product doesn’t have any awards associated with it, but it appears to have a little bit of media coverage. The manufacturer’s website claims that the supplement has been advertised by Men’s Health, Maxim, Playboy, and Men’s Journal. However, it’s unknown whether these claims are true.


Money-back Guarantee

One concern that customers face is whether a company has a good money-back policy. No one wants to be stuck with a product that they no longer want or that didn’t work for them. By finding a company that has good policies on refunds and returns, you can reduce your risk of accidentally ending up wasting your money. One good thing about TST Fuel is that the manufacturer can give you your money back in certain cases.

To get a refund for this supplement, return it to the manufacturer it its original, unopened package. Then, call the manufacturer’s customer care department to arrange to receive your refund. Opened bottles are not refundable, and neither are shipping fees. The terms and conditions of the manufacturer stipulates that if you are unsure about whether you can take the supplement, you must consult with your doctor. It also stipulates that therefore, you cannot request a refund because a medical condition or pregnancy precludes you from using the product after you’ve already purchased it.



A lot of things contribute to whether a website is worth buying from. Quick, affordable, and reliable shipping is always a plus when purchasing testosterone boosters online. Depending on where you live, you might also be interested in international shipping options. If shipping is a component of online shopping that concerns you, be sure to check the website for shipping information before making your purchase.

It appears that when purchasing this supplement from the manufacturer, shipping can cost between $3.95 and $6.95. It is not made clear which specific shipping options are available, nor what carriers are used. It’s also not known which, if any, locations outside the United States the manufacturer ships to. This information will probably be available during the checkout process. You should receive your order within two to five business days of payment.


Customer Support

If you’re looking for the best testosterone booster possible, it’s important to consider many different aspects of a company before buying from them. One of these aspects is the quality and availability of the customer support department. Although the customer support department doesn’t have to do with the quality of the supplement itself, it’s still very useful for consumers. Customer service employees are responsible for helping customers with their orders and answering their questions.

This supplement’s manufacturer has a couple of different options for contacting customer support. You can call TST Fuel customer service on the phone. The customer service department is available Monday through Friday from 9:00 AM to 5:00 PM Mountain Standard Time. If these hours aren’t convenient for you, you can also send them an email at any time. The contact information for customer service is available on their website.


Safe & Secure Checkout

Not every website is safe. It’s important to only purchase products online from websites that use a secure, private connection. The standard for secure connections is HTTPS, which stands for Hyper Text Transfer Protocol with Secure Sockets Layer. An HTTPS connection means that your private details, such as financial information, cannot be accessed by third parties.

The manufacturer’s website for this supplement features an image that claims that the website uses SSL (Secure Sockets Layer). However, information provided from the web browser indicates that this is not the case. Because the website does not use a secure connection, information such as your financial information could be collected by others and used for identity theft or fraud. If you value the privacy of your information, you should not purchase this supplement from the manufacturer. Because this product doesn’t seem to be available from any third-party retailers which might be more secure, you probably won’t be able to purchase this product with complete confidence in your privacy.


Pricing & Free Trial

Free trials are a great way to find a product that works for you. With a free trial, you can test out a product without yet committing to paying full price. Free trial programs typically are either completely free, or you receive the product itself for free and only pay for shipping and handling. The manufacturer of TST Fuel offers the latter type of free trial.

You can receive your first full-size bottle for free, and only pay shipping and handling which will cost between $3.95 and $6.95. If you aren’t satisfied with the product, you’ll have 14 days after ordering to cancel your membership. Otherwise, you will be enrolled in the auto-refill membership. As long as you have a membership, you’ll be billed $59.95 every 30 days for this month’s bottle. You can cancel your membership at any time.


  • L-Arginine, included in the formula, is a conditionally essential amino acid with many health benefits, beyond just increasing blood flow.
  • You can get this supplement conveniently auto-shipped to you every 30 days.
  • Because the supplement contains Yohimbe, a stimulant, it can help you have more energy.


  • Small details on the website, such as an anti-malware certificate, are fraudulent.
  • Yohimbe is a potentially dangerous ingredient that you must use with caution.
  • TST Fuel is not safe for everyone to use.

TST Fuel

Summary: TST Fuel is a testosterone booster that uses amino acid and herbal ingredients. It may or may not actually increase your testosterone, but it is very likely to improve nitric oxide levels and blood flow. However, the website where you can purchase TST Fuel seems somewhat fraudulent and may not be reliable.

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RatingRated 2.5 stars